JP6614208B2 - Rotating electric machine - Google Patents

Description

  The present invention relates to a rotating electrical machine including an electric unit and a control unit that controls the electric unit.

  Conventionally, a rotating electrical machine having a motor and a control device including an inverter circuit and a control circuit is known (see, for example, Patent Document 1).

  The inverter circuit of this rotating electrical machine is provided with a plurality of switching elements. The control circuit controls on / off of the switching element, converts the alternating current input from the motor into a direct current and outputs it to the outside, and converts the direct current input from the outside into an alternating current and outputs it to the motor . At that time, since a current flows through the switching element, the switching element generates heat. For this reason, the switching element is fixed to the heat sink, and the heat generated by the switching element is dissipated through the heat sink.

  In the controller-integrated rotating electrical machine described in Patent Document 1 (hereinafter simply referred to as a rotating electrical machine), the cooling performance is improved by cooling the heat sink with cold air generated by a fan provided in the rotor. I was letting.

Japanese Patent No. 4123436

  By the way, in the rotary electric machine described in Patent Literature 1, there is a possibility that the cooling performance (heat dissipation performance) may be lowered depending on the situation. For example, when the heat sink is affected by the heat generated by the motor, the cooling performance may be reduced. In addition, for example, when the rotor is not sufficiently rotated, the fan does not sufficiently rotate, and thus the cooling performance may be deteriorated.

  In view of the above circumstances, it is a primary object of the present invention to provide a rotating electrical machine that can suppress a decrease in cooling performance.

  In order to solve the above-described problem, a first invention includes an armature winding provided on a stator and a field winding provided on a rotor, and an electric portion integrated with the motor portion. A control unit that controls, wherein the control unit uses the armature switching element that switches between energization and de-energization of the armature winding, and the armature switching element, and An axis of a rotating shaft to which the rotor is fixed, comprising: a control board for controlling energization of the child winding; and a heat sink for cooling the armature switching element. In the direction, the heat sink is arranged on the opposite side of the electric part with the control board interposed therebetween.

  The heat sink has a flow path through which the refrigerant flows. For this reason, even if the calorific value of the armature switching element or the like increases, heat can be radiated without reducing the cooling performance by circulating the refrigerant.

  In the axial direction, the heat sink is disposed on the opposite side of the electric unit with the control board interposed therebetween. For this reason, even if a current flows through the armature winding provided in the electric part, the influence of the heat generation can be suppressed. Even if the situation changes in this way, it is possible to suppress the cooling performance from being lowered and to stably dissipate the armature switching element.

  According to a second aspect of the invention, the control unit includes a housing case that houses at least the armature switching element and the control board, and the heat sink sandwiches the housing case in the axial direction, and the control board The main point is that it is arranged on the opposite side of the above.

  Thereby, since a heat sink is arrange | positioned on both sides of a control board and a storage case, the influence of the heat_generation | fever of an electrically-driven part can be suppressed more.

  According to a third aspect of the present invention, in the heat sink, the armature switching element is in contact with a side surface on the control board side, and the housing case has a hole between the control board and the heat sink. The gist of the present invention is that the hole is provided at a position overlapping with a position where the armature switching element is in contact with the heat sink in the axial direction.

  Since the armature switching element is in contact with the side surface portion of the heat sink on the control board side, for example, the cooling effect can be improved as compared with the case where the armature switching element is contacted indirectly through an accommodation case or the like. it can. At the same time, the hole is provided at a position overlapping with the position where the armature switching element is in contact with the heat sink in the axial direction. For this reason, the heat sink is disposed on the opposite side of the electric part across the control board and the housing case, except for the part where the armature switching element abuts, and the influence of heat generation from the electric part can be suppressed. As described above, it is possible to suppress the influence of heat generation of the electric part while improving the cooling effect.

  The gist of the fourth invention is that the armature switching element is disposed so as to overlap the position of the flow passage of the heat sink in the axial direction.

  This reduces the distance between the flow path and the armature switching element in the axial direction, compared to the case where the flow path and the armature switching element are not overlapped with each other. Can be improved.

  In a fifth aspect of the present invention, the armature switching element is disposed at a position that does not overlap the armature winding in the axial direction and that overlaps the position of the flow path of the heat sink. This is the gist.

  This reduces the distance between the flow path and the armature switching element in the axial direction, compared to the case where the flow path and the armature switching element are not overlapped with each other. Can be improved. Furthermore, in the axial direction, the armature switching element is disposed at a position that does not overlap with the armature winding, so that the distance from the armature winding that tends to generate a large amount of heat to the armature switching element is increased. be able to. For this reason, the influence of the heat_generation | fever from the armature winding to the switching element for armatures can be suppressed. In addition, heat generation in the armature winding is less likely to be transmitted to the heat sink through the hole, and it is possible to suppress a decrease in cooling performance.

  The gist of the sixth invention is that a resin layer covering the control board and the armature switching element is provided in the housing case.

  Since the control board is covered with the resin layer, it is possible to make it difficult for the control board to generate heat. At the same time, it can be waterproof, and even if refrigerant leaks from the heat sink, it can be prevented from malfunctioning. In addition, a resin layer is formed between the electric part and the heat sink. For this reason, a heat sink can be made hard to receive the influence by the heat_generation | fever of an electrically-driven part.

  The gist of the seventh invention is that the flow passage is arranged at a position not overlapping the armature winding in the axial direction.

  Thereby, compared with the case where it arrange | positions in the overlapping position, the distance between an armature winding and a flow path can be lengthened, and the influence of the heat_generation | fever from an armature winding can be suppressed.

  The gist of the eighth invention is that a brush for supplying power to the field winding is provided at least partially in a position overlapping with the control board in the radial direction of the rotating shaft.

  Thereby, the distance of a control board and a brush can be shortened. For this reason, loss due to wiring resistance can be reduced and heat generation can be suppressed.

  According to a ninth aspect of the present invention, the electric unit includes a magnet at an end on the control unit side of both ends of the rotation shaft, the control unit includes a rotation sensor facing the magnet, and The gist of the present invention is to provide a rotation sensor substrate that is disposed apart from the armature switching element in the axial direction.

  The rotation sensor substrate is disposed apart from the armature switching element in the axial direction. For this reason, it can prevent receiving the influence of the heat_generation | fever of the switching element for armatures.

  A tenth aspect of the present invention is characterized in that the heat sink has a protruding portion protruding toward the control board in the axial direction, and the control board is in contact with the protruding portion.

  Thereby, heat can be efficiently radiated from the control board. Further, even if the armature switching element and the control board are arranged apart from each other, the control board can be brought into contact with the heat sink by the protruding portion. For this reason, it is possible to suppress the influence on the control board due to the heat generated by the armature switching element.

  In an eleventh aspect of the invention, a field switching element that switches between energization and de-energization of the field winding is mounted on the control board, and the field switching element is in contact with the heat sink. It is a summary.

  Of the elements mounted on the control board, by radiating the field switching elements that tend to generate heat, the influence on the entire control board can be reduced.

  A twelfth aspect of the invention is characterized in that an electrolytic capacitor that smoothes a direct current rectified by the armature switching element is provided, and the electrolytic capacitor is in contact with the heat sink.

  Thereby, even if the heat sink receives heat from the electrolytic capacitor, the cooling performance can be maintained by circulating the refrigerant. Therefore, it is possible to efficiently dissipate the electrolytic capacitor while reducing the influence on the control board.

  In the thirteenth aspect, the armature switching elements and the flow passages are respectively provided in plurality, and each of the flow passages is disposed at a position overlapping with any one of the armature switching elements in the axial direction. Is the gist.

  A plurality of flow passages are provided, and each flow passage is disposed at a position overlapping with one of the armature switching elements in the axial direction. For this reason, for example, unlike the case where all the armature switching elements are arranged on one flow passage, the temperature difference of the refrigerant can be reduced upstream and downstream of the flow passage. That is, it becomes easy to cool each armature switching element equally.

  The fourteenth aspect of the present invention is summarized in that the heat sink is provided with a ventilation path around the flow path.

  The refrigerant flowing through the flow passage can be cooled by air. Thereby, the cooling performance of the heat sink can be maintained.

  In a fifteenth aspect of the invention, the heat sink is provided with an inlet and an outlet of the inflow passage, and the refrigerant flowing in from the inflow port flows through the inflow passage and flows out of the outflow port. When the vehicle is arranged in a vehicle, the outflow port is arranged above the inflow port and above the outflow passage in the vertical direction of the vehicle. The gist.

  The outlet was located above the inlet and above the outlet passage. Thereby, even if gas (air etc.) mixes in a flow path, gas can be automatically extracted. Therefore, it is possible to prevent the gas from accumulating in the flow path and the cooling performance from being deteriorated.

The end view of a rotary electric machine. The exploded sectional view of a control device. The top view of a rotary electric machine. The top view of a flow path. The top view of the flow path in another example. The top view of the heat sink in another example. The end elevation of the rotary electric machine in another example.

  Hereinafter, embodiments will be described with reference to the drawings. In the following embodiments, parts that are the same or equivalent to each other are denoted by the same reference numerals in the drawings, and the description of the same reference numerals is used. The rotating electrical machine according to the present embodiment is mounted on a vehicle.

  The rotating electrical machine shown in FIG. 1 is a generator with a motor function having a motor 10 that is an electric part and a control device 20 that is a control part that controls the motor 10, and is an ISG (Integrated Starter Generator) integrated with an electric machine. It is configured as. Hereinafter, it is simply indicated as ISG100. The motor 10 is of a wound field type, and is specifically a wound field type synchronous machine having a three-phase winding. The ISG 100 has a power generation function for generating power (regenerative power generation) by rotation of the crankshaft and axle of the engine, and a power running function for applying driving force (rotational force) to the crankshaft.

  The motor 10 includes a housing 11, a stator 12 fixed to the housing 11, a rotor 13 that rotates with respect to the stator 12, and a rotating shaft 14 to which the rotor 13 is fixed. Hereinafter, in the present embodiment, the axial direction indicates the axial direction of the rotating shaft 14 (indicated by an arrow Y1 in the figure), and the radial direction indicates the radial direction of the rotating shaft 14 (indicated by the arrow in the figure). Y2).

  The housing 11 is formed in a cylindrical shape, and its axis is coaxial with the rotating shaft 14. A control device 20 is fixed to the outside of the housing 11 in the axial direction (right side in FIG. 1). On the other hand, a stator 12 and a rotor 13 are accommodated in the housing 11.

  The stator 12 is provided in a cylindrical shape along the inner periphery of the housing 11 at the approximate center in the axial direction of the housing 11, and is fixed to the housing 11. The stator 12 constitutes a part of a magnetic circuit, and includes a stator core 12a and an armature winding 12b.

  The stator core 12 a is formed in an annular shape from a magnetic material, and its axis is coaxial with the rotary shaft 14. The stator core 12a holds the armature winding 12b. The stator core 12a includes a plurality of slots for accommodating the armature windings 12b, and the armature windings 12b are accommodated and held in the slots.

  The armature winding 12b is composed of two sets of Y-connected three-phase windings. The armature winding 12b generates magnetic flux when electric power (AC power) is supplied. The armature winding 12b generates electric power (alternating current power) by interlinking with the magnetic flux generated by the rotor 13.

  The rotor 13 constitutes a part of a magnetic circuit, and includes a rotor core 13a made of a magnetic material, a field winding 13b held by the rotor core 13a, and a fan provided in the rotor core 13a. 13c.

  The rotor core 13a is a so-called Landel-type pole core, and includes an annular hollow portion, and the field winding 13b is accommodated in the hollow portion. The rotor core 13a is arranged so as to face the outer peripheral surface thereof in a state of being separated from the inner peripheral surface of the stator core 12a. A rotating shaft 14 is inserted through the rotor core 13 a and is fixed to the rotating shaft 14 so as to rotate integrally with the rotating shaft 14.

  The field winding 13b generates magnetic flux when DC power is supplied, and forms magnetic poles on the outer peripheral surface of the rotor core 13a. As a result, when AC power is supplied to the stator 12, the rotor 13 rotates by interlinking with the magnetic flux generated by the stator 12. Further, when the rotor 13 rotates, AC power is generated in the armature winding 12b of the stator 12.

  The fan 13c (indicated by a broken line in FIG. 1) is provided at an end portion (end portion on the control device 20 side) in the axial direction of the rotor core 13a. The fan 13c is erected so as to extend outward from the end of the rotor core 13a in the axial direction. The fan 13c rotates together with the rotor core 13a and circulates air from the outside of the motor 10 to the inside (or from the inside to the outside).

  The rotating shaft 14 is rotatably supported by the housing 11 via bearings 11 a and 11 b provided on the housing 11. A rotor 13 is fixed to the rotary shaft 14 at the central portion in the axial direction. Further, in the axial direction, both end portions of the rotating shaft 14 protrude from the housing 11, and the end portion on the opposite side to the control device 20 (left side in FIG. 1) is connected to an engine crankshaft, axle, or the like. .

  Further, in the axial direction, the end of the rotating shaft 14 (the end on the control device 20 side) is inserted into the control device 20. A slip ring 14a is provided at the end of the rotating shaft 14 to contact a brush 80 described later and supply DC power supplied from the brush 80 to the field winding 13b. The slip ring 14a is formed in a cylindrical shape from metal. The slip ring 14a is fixed to the outer peripheral surface of the rotating shaft 14 via an insulator. The slip ring 14a is connected to the field winding 13b via a wiring (not shown).

  Next, the control device 20 will be described. As described above, the control device 20 is fixed to the outside in the axial direction of the housing 11 of the motor 10.

  The control device 20 has a function of converting electric power from the outside (for example, a battery) and supplying the electric power to the motor 10 to generate driving force, and a function of converting electric power from the motor 10 and supplying electric power to the outside. . The control device 20 includes a housing case 30, a heat sink 40, a power module 50, an electrolytic capacitor 60, a control board 70, a brush 80, and the like.

  As shown in FIG. 1, the housing case 30 is fixed to the end of the housing 11 of the motor 10 in the axial direction. The housing case 30 is made of resin and has a bottomed cylindrical shape. Further, the housing case 30 is formed to be larger than at least the outer diameter of the rotor 13 and the stator 12 in the radial direction, and is formed so as to cover the end portion of the motor 10 in the axial direction.

  The housing case 30 opens to the housing 11 side (motor 10 side), and the power module 50, the electrolytic capacitor 60, the control board 70, the brush 80, and the like are housed in the housing case 30.

  As shown in FIGS. 1 and 2, a convex portion 31 that protrudes outward in the axial direction (on the side opposite to the motor 10) is provided at the center of the housing case 30. The convex portion 31 is formed with an insertion concave portion 32 into which the end of the rotating shaft 14 is inserted. The insertion recess 32 is open to the motor 10 side, and is configured such that the end of the rotating shaft 14 is inserted through the opening. That is, the insertion recess 32 is formed larger than the diameter of the rotating shaft 14 in the radial direction. Further, the end of the rotating shaft 14 is disposed so as to be rotatable in the insertion recess 32. The housing case 30 is provided with a partition wall 33 that covers the radially outer side of the rotating shaft 14. The partition wall 33 is provided along the peripheral wall of the insertion recess 32, and is provided so as to extend in the axial direction from the bottom of the storage case 30 to the vicinity of the opening of the storage case 30. The partition wall 33 is provided so as to partition the region 34a in which the control board 70 is accommodated from the region 34b in which the rotating shaft 14 is inserted.

  A magnet 91 is disposed at the tip of the rotating shaft 14 (tip on the control device 20 side). In addition, a rotation sensor substrate 92 mounted with a rotation sensor facing the magnet 91 disposed at the tip is fixed to the bottom of the insertion recess 32. That is, the rotation sensor substrate 92 is disposed at a position overlapping the rotation shaft 14 and the magnet 91 in the axial direction, and is disposed on the outer side (the housing case 30 side) than the tip of the rotation shaft 14. The rotation sensor substrate 92 is configured to be able to detect the rotation angle of the rotation shaft 14 using the rotation sensor and the magnet 91. Information regarding the detected rotation angle is input to the control board 70. The microcomputer of the control board 70 controls the motor 10 and the like using the information regarding the rotation angle.

  As shown in FIGS. 1 and 2, the heat sink 40 is fixed to the outside of the housing case 30 (on the side opposite to the motor 10) in the axial direction. As shown in FIG. 3, the heat sink 40 is formed in a flat plate shape extending in the radial direction so as to cover the end surface (outer surface) of the housing case 30 in the axial direction. The heat sink 40 is smaller than the size of the end surface (outer surface) of the housing case 30. The heat sink 40 is made of metal. The heat sink 40 is disposed on the outermost side in the axial direction among the members constituting the ISG 100 and is exposed to the outside. As shown in FIG. 2, the heat sink 40 has a base 41 fixed to the housing case 30 and a lid 42 fixed to the base 41 so as to cover the base 41.

  As shown in FIG. 1, the heat sink 40 is formed with a flow passage 43 through which a refrigerant (for example, water) flows. More specifically, as shown in FIG. 2, the base 41 is formed with a groove 41 a that opens toward the lid 42, and the flow passage 43 is formed by covering the opening of the groove 41 a with the lid 42. Has been. As shown in FIG. 4, a rubber seal member 44 is disposed around the groove 41a. The seal member 44 prevents the refrigerant from leaking from the gap between the base portion 41 and the lid portion 42.

  As shown in FIG. 4, the flow passage 43 is provided in a U shape around the rotation shaft 14 so as to avoid the rotation shaft 14. Further, as shown in FIG. 1, the flow passage 43 is provided at a position at least partially overlapping the rotary shaft 14 in the radial direction. That is, the flow passage 43 is provided so that the refrigerant flows around the rotating shaft 14. For this reason, it is possible to shorten the length of the ISG 100 in the axial direction. Further, the flow passage 43 is arranged at a position overlapping the rotation sensor substrate 92 in the radial direction. Further, most of the flow passage 43 (more specifically, the portion other than the vicinity of the inflow port 43a and the outflow port 43b) is disposed at a position where it does not overlap with the armature winding 12b in the axial direction. In other words, most of the flow passage 43 is disposed radially inward of the armature winding 12b.

  In addition, a protrusion 45 that protrudes toward the storage case 30 (control board 70) in the axial direction is provided on the surface (side surface) of the base 41 on the storage case 30 side. When the heat sink 40 is fixed to the housing case 30, the protruding portion 45 is inserted into a through hole 30 a that is provided at the bottom of the housing case 30 and penetrates in the axial direction. The through hole 30 a corresponds to a hole provided between the control board 70 and the heat sink 40.

  The protrusion 45 is provided in the housing case 30 so that at least a part of the protrusion 45 (a tip portion in the axial direction) protrudes. Further, the protruding portion 45 is provided at a position overlapping the flow passage 43 in the axial direction. Further, a plurality of through holes 30 a and protrusions 45 of the housing case 30 are provided.

  As shown in FIG. 3, the lid portion 42 is provided with an inflow port 43 a and an outflow port 43 b that communicate with the flow passage 43. The refrigerant is configured to flow into the flow path 43 through the inflow port 43a, and the refrigerant is configured to flow out of the flow path 43 through the outflow port 43b. The refrigerant is, for example, water, and is configured to be able to circulate in the flow passage 43 by a pump (not shown). Further, when the ISG 100 is installed in the vehicle, at least the outflow port 43 b is disposed above the flow passage 43. Further, when the ISG 100 is installed in a vehicle, the outlet 43b is disposed above the inlet 43a. For this reason, even if it is a case where gas (air etc.) is mixed with a refrigerant | coolant, gas will be discharged | emitted from the outflow port 43b, without storing in the flow path 43. FIG.

  The power module 50 is an element in which four armature switching elements 51 are integrated. The armature switching element 51 is an element that switches between energization and de-energization of the armature winding 12b.

  In the present embodiment, an inverter circuit that is a power conversion circuit is configured by a plurality (three in the present embodiment) of power modules 50. The inverter circuit is a circuit that converts DC power supplied from the outside into AC power and supplies AC power to the armature winding 12b, and the AC power supplied from the armature winding 12b is converted to DC power. This is a circuit that converts the signal to the external and supplies it to the outside.

  An inverter circuit is constituted by two sets of three-phase inverters corresponding to the armature windings 12b which are two sets of three-phase windings. Further, the three-phase inverter is composed of six armature switching elements 51. That is, a total of twelve armature switching elements 51 are used, and the power module 50 is configured by integrating four armature switching elements 51. The armature switching element 51 is connected to the armature winding 12b via wiring such as a bus bar (not shown).

  These power modules 50 are in contact with the heat sink 40. More specifically, the power module 50 is fixed to the heat sink 40 exposed through a through hole 30 a provided in the bottom of the housing case 30. At that time, the power module 50 is fixed to the heat sink 40 via an insulator 52 (an insulating or heat conductive adhesive or a thin insulating film).

  Further, as described above, the protrusion 45 of the heat sink 40 protrudes into the storage case 30 through the through hole 30 a provided in the bottom of the storage case 30. The power module 50 is in contact with the front end surface of the protrusion 45. Therefore, the armature switching element 51 constituting the power module 50 is disposed at a position overlapping the flow passage 43 in the axial direction. In addition, the through hole 30 a is provided at a position overlapping the position where the armature switching element 51 is in contact with the heat sink 40 in the axial direction.

  Further, in the radial direction, the power module 50 is disposed at a position overlapping the rotating shaft 14. That is, the power module 50 is disposed on the radially outer side of the rotating shaft 14. Thereby, the axial length of the ISG 100 can be shortened. Further, the power module 50 is disposed in the vicinity of the bottom of the housing case 30 in the axial direction, and is disposed between the motor 10 and the heat sink 40.

  The electrolytic capacitor 60 is a capacitor that smoothes the DC current converted (rectified) by the inverter circuit based on the AC power of the motor 10. The electrolytic capacitor 60 is fixed to the heat sink 40 in the same manner as the power module 50.

  That is, the electrolytic capacitor 60 is fixed to the heat sink 40 (the protruding portion 45) exposed through the through hole 30a provided in the bottom of the housing case 30. At that time, the electrolytic capacitor 60 is fixed to the heat sink 40 via the insulator 52. Therefore, the electrolytic capacitor 60 is disposed at a position overlapping the flow passage 43 in the axial direction.

  In the radial direction, the electrolytic capacitor 60 is disposed at a position overlapping the rotating shaft 14. That is, the electrolytic capacitor 60 is disposed on the outer side in the radial direction of the rotating shaft 14 and the armature switching element 51. Thereby, the axial length of the ISG 100 can be shortened. Further, the electrolytic capacitor 60 is disposed at the bottom of the housing case 30 in the axial direction, and is disposed between the motor 10 and the heat sink 40.

  Next, the control board 70 will be described. The control board 70 is an annular flat plate. The control board 70 is housed and held in the housing case 30, and is disposed at a predetermined distance in the axial direction from the bottom of the housing case 30. Moreover, the control board 70 is accommodated in the accommodation case 30 so that the plane is parallel to the bottom surface of the accommodation case 30, that is, the plane is arranged along the radial direction.

  A plurality of control elements are mounted on the control board 70. For example, a field switching element 71 that switches between supplying and shutting off DC power to the field winding 13b is mounted. In addition, a microcomputer, ROM, RAM and the like for controlling various switching elements are mounted. The control board 70 is connected to the armature switching element 51, the electrolytic capacitor 60, and the like via wiring such as a bus bar (not shown). The microcomputer uses the armature switching element 51 to control energization of the armature winding 12b.

  In the control board 70, the rotating shaft 14 and the insertion recess 32 of the housing case 30 are arranged on the inner side of the inner periphery thereof. That is, the control board 70 is disposed on the radially outer side of the rotation shaft 14 and the insertion recess 32. At that time, the control board 70 is partitioned from the insertion recess 32 by the partition wall 33. And the control board 70 is arrange | positioned in the position which overlaps with the rotating shaft 14 in radial direction.

  By the way, when the motor 10 is driven, a current flows through the armature winding 12b and the field winding 13b and heat is generated accordingly. When affected by the heat generation of the motor 10, the heat sink 40 is warmed, and the cooling effect may be reduced.

  Therefore, the control board 70 is arranged between the motor 10 and the heat sink 40. That is, in the axial direction, the heat sink 40 is disposed on the opposite side of the motor 10 with the control board 70 interposed therebetween. Thereby, even when the motor 10 generates heat, the control board 70 makes it difficult for the generated heat to be transmitted to the heat sink 40, and the cooling performance of the heat sink 40 is prevented from being lowered.

  Further, in the axial direction, the control board 70 is disposed at a position overlapping the through hole 30 a of the housing case 30. That is, the control board 70 is disposed so as to cover the through hole 30a. Accordingly, in the axial direction, the through hole 30a is disposed on the opposite side of the motor 10 with the control board 70 interposed therebetween. For this reason, the heat sink 40 can suppress being directly affected by the heat generated by the motor 10 through the through hole 30a. That is, even when the motor 10 generates heat, the control board 70 makes it difficult for the generated heat to be transmitted to the heat sink 40. On the other hand, the heat sink 40 can be brought into direct contact with the armature switching element 51 through the through hole 30a, and the cooling effect on the armature switching element 51 is improved.

  Furthermore, in the axial direction, the through hole 30a and the armature switching element 51 are arranged at positions that do not overlap with the armature winding 12b. More specifically, the through hole 30a and the armature switching element 51 are arranged on the inner side of the armature winding 12b in the radial direction. As a result, the heat sink 40 can suppress the influence of heat generation from the armature winding 12b that generates a large amount of heat through the through hole 30a. That is, even when the armature winding 12 b generates heat, the control board 70 makes it difficult for the generated heat to be transmitted to the heat sink 40. In addition, in the axial direction, the through hole 30a and the armature switching element 51 can have a longer distance compared to the case where the through hole 30a and the armature switching element 51 overlap with the armature winding 12b. It becomes difficult to be transmitted.

  Further, most of the flow passage 43 is disposed at a position where it does not overlap with the armature winding 12b in the axial direction. For this reason, the distance between the armature winding 12b and the flow passage 43 is longer than in the case where the armature windings 12b are arranged at overlapping positions. Therefore, it is possible to suppress the refrigerant flowing through the flow passage 43 from being affected by the heat generation from the armature winding 12b.

  In addition, a part of the control elements (for example, the field switching element 71 and the microcomputer) mounted on the control board 70 is interposed between a part of the protrusions 45 and the insulator 52 among the protrusions 45 of the heat sink 40. Are configured to contact each other. That is, in the protrusion 45, a second protrusion 45b having a longer length in the axial direction than the first protrusion 45a in contact with the armature switching element 51 is provided. The second protrusion 45b contacts the control board 70. In the present embodiment, the second protrusion 45 b contacts the field switching element 71 of the control board 70.

  Thereby, the control board 70 can be arranged at a predetermined distance in the axial direction from the armature switching element 51 and the electrolytic capacitor 60, and the influence of heat generation by the armature switching element 51 and the like is suppressed. . At the same time, the cooling effect is improved by bringing the control board 70 into direct contact with the heat sink 40.

  Further, the control board 70 is disposed at a position overlapping the armature switching element 51 in the axial direction. Further, in the axial direction, the control board 70 is disposed at a position overlapping the electrolytic capacitor 60. Therefore, even when the motor 10 generates heat, the control board 70 makes it difficult for the generated heat to be transmitted to the armature switching element 51.

  In addition, the housing case 30 is filled with the insulating resin material in the region 34a (the region in which the control substrate 70 is accommodated) in a state where the power module 50, the control substrate 70, and the like are accommodated. A resin layer 35 is provided. The resin layer 35 is disposed between the motor 10 and the heat sink 40. For this reason, even when the motor 10 generates heat, the resin layer 35 makes it difficult for the generated heat to be transmitted to the heat sink 40, and the cooling performance of the heat sink 40 is suppressed from decreasing.

  Next, the brush 80 will be described. The brush 80 is accommodated in the insertion recess 32. The brush 80 includes a brush portion 80a that contacts the outer periphery of the slip ring 14a, and a holder portion 80b that holds the brush portion 80a. The brush portion 80a is fixed by a holder portion 80b so as to be in contact with the outer periphery of the slip ring 14a and to be slidable. Further, the brush 80 is disposed in the housing case 30 so that at least a part thereof overlaps the control board 70 in the radial direction.

  The brush 80 is connected to the control board 70 via a wiring (not shown), and is configured such that power is supplied from the control board 70. And the brush 80 is comprised so that the said electric power can be supplied to the field winding 13b via the slip ring 14a. Thereby, the length of the wiring between the control board 70 and the brush 80 becomes short compared with the case where the brush 80 is arrange | positioned in the position where at least one part does not overlap with the control board 70 in radial direction. .

  Next, the operation when the motor 10 is driven will be described.

  When the power supply system is in an operating state such as when an ignition switch of the vehicle is turned on, DC power is supplied to the control board 70 from the outside (battery or the like). Based on this DC power, a microcomputer or the like mounted on the control board 70 is driven, and control is started based on an external command.

  When the microcomputer of the control board 70 drives the motor 10, the field switching element 71 is used to drive the DC power supplied from the outside via the brush 80 and the slip ring 14 a to the field winding 13 b. To supply. At the same time, the microcomputer converts the DC current supplied using the armature switching element 51 (that is, the inverter circuit) into AC power and supplies the AC power to the armature winding 12b. Thereby, the drive of the motor 10 is started.

  At the start of the motor 10, a current flows through the armature switching element 51 and the like to generate heat. However, the armature switching element 51 and the like are cooled by the heat sink 40. At that time, the refrigerant in the heat sink 40 and the flow passage 43 is also warmed, but the cooling performance is suppressed from being lowered by circulating the refrigerant. Even if the rotor 13 is not sufficiently rotated, the cooling performance is suppressed from being lowered by circulating the refrigerant.

  Further, when the motor 10 is driven, a current flows through the armature winding 12b and the field winding 13b to generate heat. However, at least the control board 70 and the resin layer 35 are interposed between the motor 10 and the heat sink 40. For this reason, even when the motor 10 generates heat, the influence is suppressed in the heat sink 40.

  Further, when the rotor 13 rotates, the air is circulated between the ISG 100 and the outside and the inside by the fan 13c, the armature winding 12b and the field winding 13b are cooled, and the temperature rise of the motor 10 is suppressed. .

  Next, a case where power generation is performed by the motor 10 will be described.

  When the microcomputer of the control board 70 causes the motor 10 to generate power, the field switching element 71 is used to transfer the DC power supplied from the outside via the brush 80 and the slip ring 14a to the field winding 13b. To supply. When the rotating shaft 14 is rotated by receiving a driving force from an engine or the like, electric power is generated in the armature winding 12b, and AC power is supplied from the armature winding 12b to the control board 70. The microcomputer converts AC power supplied using the armature switching element 51 (inverter circuit) into DC power and supplies the DC power to the outside.

  During the power generation of the motor 10, current flows through the armature switching element 51 and the like to generate heat. However, the armature switching element 51 and the like are cooled by the heat sink 40. At that time, the refrigerant in the heat sink 40 and the flow passage 43 is also warmed, but the cooling performance is suppressed from being lowered by circulating the refrigerant.

  Further, during the power generation of the motor 10, current flows through the armature winding 12b and the field winding 13b to generate heat. However, at least the control board 70 and the resin layer 35 are interposed between the motor 10 and the heat sink 40. For this reason, even when the motor 10 generates heat, the influence is suppressed in the heat sink 40.

  Further, the fan 13c rotates together with the rotor 13 by the driving force. For this reason, air circulates between the ISG 100 and the outside and the inside, the armature winding 12b and the field winding 13b are cooled, and the temperature rise of the motor 10 is suppressed.

  According to this embodiment described above, the following effects are obtained.

  The heat sink 40 has a flow passage 43 through which a refrigerant flows. For this reason, even if the amount of heat generated by the armature switching element 51 or the like increases and the refrigerant in the heat sink 40 and the flow passage 43 is warmed, heat can be radiated without reducing the cooling performance by circulating the refrigerant. it can.

  In the axial direction, the heat sink 40 is disposed on the opposite side of the motor 10 with the control board 70 interposed therebetween. For this reason, even if a current flows through the armature winding 12b included in the motor 10 and the motor 10 generates heat, the influence of the generated heat can be suppressed. Even if the situation changes in this way, it is possible to suppress the cooling performance from decreasing and to stably dissipate the armature switching element 51.

  The heat sink 40 is disposed on the opposite side of the control board 70 across the housing case 30 in the axial direction. Thereby, in the axial direction, the heat sink 40 is disposed with the control board 70 and the housing case 30 interposed therebetween, so that the influence of heat generated by the motor 10 can be further suppressed.

  Since the armature switching element 51 is in contact with the heat sink 40 exposed through the through hole 30a, the armature switching element 51 is cooled as compared with a case where the armature switching element 51 is indirectly contacted with the accommodation case 30 or the like interposed therebetween. The effect can be improved. At the same time, the control board 70 is interposed between the through hole 30a and the motor 10 in the axial direction. For this reason, the influence on the heat sink 40 by the heat generation of the motor 10 can be suppressed while improving the cooling effect.

  The armature switching element 51 is in contact with the surface of the heat sink 40 on the motor 10 side, and is disposed at a position overlapping the position of the flow path 43 of the heat sink 40 in the axial direction. Thereby, compared with the case where it arrange | positions so that it may not overlap, the distance between the flow path 43 and the switching element 51 for armatures can be shortened, and a cooling effect can be improved.

  Further, the armature switching element 51 and the through hole 30a are arranged at positions that do not overlap with the position of the armature winding 12b in the axial direction. For this reason, the distance from the armature winding 12b, which generates a large amount of heat, to the through hole 30a can be shortened compared to the case where the armature winding 12b is disposed at an overlapping position, thereby suppressing the influence of heat generation from the armature winding 12b. can do.

  By filling the housing case 30 with resin, the control board 70 is covered with resin. For this reason, it can be made hard to receive the influence of the heat_generation | fever from the motor 10. FIG. At the same time, it can be waterproofed, and even if the refrigerant flowing in the heat sink 40 leaks, it can be prevented from malfunctioning. Moreover, even if the motor 10 generates heat, the resin layer 35 can suppress the influence from being transmitted to the heat sink 40 and can suppress the cooling performance from being lowered.

  The brush 80 that supplies power to the field winding 13 b is disposed at a position where at least a portion thereof overlaps the control board 70 in the radial direction of the rotating shaft 14. Thereby, the distance between the control board 70 and the brush 80 can be shortened. Therefore, loss due to wiring resistance can be reduced and heat generation can be suppressed. Also, the axial length can be kept short.

  A magnet 91 is provided at an end of the rotating shaft 14 on the control device 20 side, and a rotation sensor substrate 92 on which a rotation sensor facing the magnet 91 is mounted. As this rotation sensor, for example, a magnetic sensor IC incorporating a Hall element is used. Since the magnetic sensitivity (characteristic) of such a Hall element changes with temperature, it is common for a microcomputer to perform correction processing at predetermined intervals in consideration of temperature characteristics. However, according to the above configuration, since the rotation sensor substrate 92 is separated from the armature switching element 51, the rotation sensor substrate 92 is not easily affected by heat generated by the armature switching element 51. Therefore, it is possible to reduce the processing load of the microcomputer by extending the temperature characteristic correction processing cycle.

  The control board 70 is in contact with the second protrusion 45 b of the heat sink 40. Thereby, the control board 70 can be efficiently radiated. Even if the armature switching element 51 and the control board 70 are arranged apart from each other, the control board 70 can be brought into contact with the heat sink 40. For this reason, the influence on the control board 70 by the heat_generation | fever of the switching element 51 for armatures can be suppressed.

  The field switching element 71 of the control board 70 is in contact with the second protrusion 45 b of the heat sink 40. By dissipating heat from the field switching element 71 that easily generates heat, it is possible to prevent the entire control board 70 from being affected.

  Similarly to the armature switching element 51, the electrolytic capacitor 60 is in contact with the heat sink 40. Thereby, even if the heat sink 40 receives heat from the electrolytic capacitor 60, the cooling performance can be maintained by circulating the refrigerant. Therefore, the electrolytic capacitor 60 can be efficiently dissipated while reducing the influence on the control board 70.

  When the ISG 100 is disposed in the vehicle, the outflow port 43b is disposed above the flow passage 43 in the vertical direction of the vehicle. Moreover, the outflow port 43b is arrange | positioned above the inflow port 43a. Thereby, even if gas (air etc.) mixes in the flow path 43, gas can be extracted. In other words, even when gas is mixed in the refrigerant, it is possible to automatically expect from the outlet 43b due to its buoyancy, preventing the cooling performance from deteriorating due to gas accumulation. it can.

  The rotating shaft 14 is disposed so as to overlap the control board 70 and the flow passage 43 in the radial direction. For this reason, the length of the ISG 100 in the axial direction can be shortened.

  In the axial direction, the flow passage 43 is disposed at a position that does not overlap the armature winding 12b. For this reason, compared with the case where it arrange | positions in the overlapping position, the distance from the armature winding 12b to the flow path 43 can be lengthened. That is, the flow passage 43 can be suppressed from being affected by the armature winding 12b that generates a large amount of heat.

(Other embodiments)
The present invention is not limited to the above embodiment, and may be implemented as follows, for example. In the following, parts that are the same or equivalent to each other in the respective embodiments are denoted by the same reference numerals, and the description of the same reference numerals is used.

  In the said embodiment, although demonstrated using 2 sets of motors 10 of a 3-phase Y connection for a Landel type | mold rotor, the structure of the motor 10 is not restricted to this. That is, the same effect can be obtained as long as the rotating electric machine integrally fixes the control device 20 to a general motor.

  In the above embodiment, the flow passage 43 is arranged so as to overlap with all the power modules 50 in the axial direction. As another example, the flow passage 43 may be branched or provided. Each flow passage 43 may be disposed so as to overlap with any one of the power modules 50 in the axial direction.

  For example, as shown in FIG. 5, two power modules (armature switching elements 102a and 102b) are arranged in one flow passage 101a as shown by a broken line, and one flow passage 101b has one flow passage 101b. A power module (armature switching element 102c) may be arranged. In this case, for example, unlike the case where all the armature switching elements 51 are arranged on one flow passage 43, the temperature difference of the refrigerant can be reduced upstream and downstream of the flow passages 101a and 101b. . That is, it becomes easy to cool each armature switching element 51 equally.

  In the above embodiment, the heat sink 40 may be provided with the ventilation path 201 around the flow path 43. For example, as shown in FIG. 6, a ventilation path 201 may be provided so as to penetrate the heat sink 40 and the housing case 30 in the axial direction. That is, the ventilation path 201 is provided between the rotating shaft 14 and the control board 70. The ventilation path 201 is provided in an arc shape. In addition, a plurality of fins 202 are erected along the axial direction on the outer surface of the lid portion 42 (the surface on the side opposite to the motor 10 in the axial direction). The fin 202 is disposed at a position overlapping the flow passage 43 in the axial direction, and is formed so as to extend along the radial direction so that air flows along the radial direction (the direction of the arrow).

  By providing the ventilation path 201 in the heat sink 40 in this way, air flows in the ventilation path 201 and the heat sink 40 can be cooled. At the same time, the control board 70 and the armature switching element 51 can be cooled. Further, when the fan 13 c rotates together with the rotor 13, air can be circulated through the ventilation path 201. In that case, air can be distribute | circulated so that the inside of the control apparatus 20 may be passed along an axial direction. Thereby, the cooling effect can be improved. Further, the air can be circulated around the flow passage 43 by the fins 202 to cool the refrigerant flowing through the heat sink 40 and the flow passage 43, and the cooling effect can be improved.

  In the above embodiment, the flow passage 43 may be disposed at a position overlapping the armature winding 12b.

  In the above embodiment, the outlet 43b is configured to be disposed above the inlet 43a. However, even if gas remains in the passage 43, there is little influence on cooling of the armature switching element 51. For example, it may be arranged below. In this case, it is desirable that the inflow port 43 a be disposed above the flow passage 43.

  In the above embodiment, the outlet 43 b may be disposed below the flow path 43 as long as there is little influence on the cooling of the armature switching element 51 even if gas remains in the flow path 43.

  In the above embodiment, a motor heat sink 301 for cooling the motor 10 may be provided. For example, as shown in FIG. 7, an annular motor heat sink 301 that covers the outer periphery in the radial direction of the motor 10 may be provided. Thereby, the motor 10 can dissipate heat. The motor heat sink 301 includes a flow passage 302 through which refrigerant flows. The flow path 302 is provided so as to surround the outer periphery in the radial direction of the motor 10 (more specifically, the housing 11). Thereby, even when the heat sink 301 for the motor is warmed when the heat is radiated from the motor 10, it is possible to suppress the cooling performance from being lowered by circulating the refrigerant. In addition, the inflow path 302 is provided with an inflow port 303 into which the refrigerant flows in and an outflow port 304 through which the refrigerant flows out. When the ISG 100 is installed in the vehicle, the outlet 304 is disposed above the inlet 303.

  In the above embodiment, the through hole 30a is provided in the housing case 30, but it may not be provided. In this case, for example, the armature switching element 51 may be brought into contact with the heat sink 40 via the bottom of the housing case 30.

  In the above embodiment, the armature switching element 51 is provided so as to overlap with the position of the flow passage 43 in the axial direction, but it does not have to be in the overlapping position. Moreover, the flow path 43 may be arrange | positioned in the position which does not overlap with the armature winding 12b at all in the axial direction.

  In the above-described embodiment, the projecting portion 45 projecting from the base portion 41 is provided. Moreover, you may provide only any one among the 1st protrusion part 45a and the 2nd protrusion part 45b.

  In the above-described embodiment, the resin is filled in the housing case 30 and the resin layer 35 is provided.

  In the above-described embodiment, the brush 80 is arranged at a position overlapping the control board 70 in the radial direction, but may not be arranged at the overlapping position.

  DESCRIPTION OF SYMBOLS 10 ... Motor, 12 ... Stator, 13 ... Rotor, 13b ... Field winding, 14 ... Rotating shaft, 20 ... Control device, 40 ... Heat sink, 43, 101a, 101b ... Flow path, 51, 102a-102c ... Switching element for armature, 70 ... control board, 100 ... ISG.

Claims (22)

An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow passage (43, 101a, 101b) through which a refrigerant flows, and cooling the armature switching element;
A housing case (30) for housing at least the armature switching element and the control board ;
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part across the control board, and the heat sink is A rotating electrical machine disposed on the opposite side of the control board across a housing case . In the heat sink, the switching element for armature is in contact with the side surface portion on the control board side,
The housing case is provided with a hole (30a) between the control board and the heat sink,
2. The rotating electrical machine according to claim 1 , wherein the hole portion is provided at a position overlapping with a position where the armature switching element is in contact with the heat sink in the axial direction. The rotating electrical machine according to claim 2 , wherein the armature switching element is disposed so as to overlap a position of the flow path of the heat sink in the axial direction. Switching element for the armature in the axial direction, a position that does not overlap with the armature winding, and, according to claim 2 which is disposed at a position overlapping the position of said flow passage of said heat sink Rotating electric machine. The rotating electrical machine according to any one of claims 1 to 4 , wherein a resin layer (35) that covers the control board and the armature switching element is provided in the housing case. The flow passages in the axial direction, the rotating electrical machine according to any one of claims 1 to 5 disposed in a position that does not overlap with the armature winding. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotating electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow passage (43, 101a, 101b) through which a refrigerant flows inside, and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
The flow path is a rotating electrical machine that is disposed at a position that does not overlap the armature winding in the axial direction.   8. The brush according to claim 1, further comprising a brush that is disposed at a position where at least a portion thereof overlaps the control board in a radial direction of the rotating shaft and supplies power to the field winding. The rotating electrical machine described. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
In the radial direction of the rotating shaft is disposed at least partially overlaps the control board position, rotating electric machine including a brush (80) for supplying power to said field winding. The electric unit includes a magnet (91) at an end on the control unit side of both ends of the rotating shaft,
Wherein, rotation sensor facing the magnet is mounted, and, of claims 1-9 comprising a rotation sensor substrate (92) which is disposed apart from the armature switching element in the axial direction The rotating electrical machine according to any one of claims. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
The electric unit includes a magnet (91) at an end on the control unit side of both ends of the rotating shaft,
The control unit includes a rotation sensor board (92) on which a rotation sensor facing the magnet is mounted, and a rotation sensor substrate (92) that is disposed apart from the armature switching element in the axial direction . The heat sink has a protrusion (45) protruding toward the control board in the axial direction,
The control board, electric rotating machine according to any one of claims 1 to 11 which is in contact with the projecting portion. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
The heat sink has a protrusion (45) protruding toward the control board in the axial direction,
The control board is a rotating electrical machine in contact with the protruding portion . The field switching element (71) for switching between energization and deenergization of the field winding is mounted on the control board, and the field switching element is in contact with the heat sink. The rotating electrical machine according to 12 or 13 . An electrolytic capacitor (60) for smoothing a direct current rectified by the armature switching element;
The electrolytic capacitors, electric rotating machine according to any one of claims 1-14 which is in contact with the heat sink. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
An electrolytic capacitor (60) for smoothing a direct current rectified by the armature switching element;
The electrolytic capacitor is a rotating electrical machine in contact with the heat sink . A plurality of the armature switching elements and the flow passages are provided,
The rotating electrical machine according to any one of claims 1 to 16 , wherein each of the flow passages is disposed at a position overlapping with any one of the armature switching elements in the axial direction. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
A plurality of the armature switching elements and the flow passages are provided,
Each said flow path is a rotary electric machine arrange | positioned in the position which overlaps with either of the said switching elements for armatures in the said axial direction . The rotating electrical machine according to any one of claims 1 to 18 , wherein the heat sink is provided with a ventilation path (201) around the flow path. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
A rotating electrical machine in which the heat sink is provided with a ventilation path (201) around the flow path . The heat sink is provided with an inflow port (43a) and an outflow port (43b) of the flow path, and the refrigerant flowing in from the flow path flows through the flow path and flows out from the outflow port. Configured to
When placed in a vehicle, the outlet port in the vertical direction of the vehicle, while being disposed above the inlet, one of claims 1 to 20, which is disposed above the flow passage 1 The rotating electrical machine according to the item. An electric part (10) having an armature winding (12b) provided on the stator (12) and a field winding (13b) provided on the rotor (13), and the electric part integrated with the electric part. A rotary electric machine (100) comprising a control unit (20) for controlling the unit,
The controller is
An armature switching element (51, 102a to 102c) for switching between energization and de-energization of the armature winding;
A control board (70) for performing energization control of the armature winding using the armature switching element;
A heat sink (40) having a flow path (43, 101a, 101b) through which a refrigerant flows inside and cooling the armature switching element,
In the axial direction of the rotating shaft (14) to which the rotor is fixed, the heat sink is disposed on the opposite side of the electric part with the control board interposed therebetween,
The heat sink is provided with an inflow port (43a) and an outflow port (43b) of the flow path, and the refrigerant flowing in from the flow path flows through the flow path and flows out from the outflow port. Configured to
When arranged in a vehicle, the rotating electrical machine is disposed above the inflow port and above the inflow passage in the vertical direction of the vehicle .

Images